package com.koko.interceptor;

import com.koko.constant.JwtClaimsConstant;
import com.koko.constant.MessageConstant;
import com.koko.context.AdminContext;
import com.koko.context.FeignContext;
import com.koko.exception.AccountNotLoginException;
import com.koko.properties.JwtAdminProperties;
import com.koko.utils.JwtUtil;
import io.jsonwebtoken.Claims;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@Component
@Slf4j
public class JwtTokenAdminInterceptor implements HandlerInterceptor {

    @Autowired
    private JwtAdminProperties jwtAdminProperties;
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        // 判断当前拦截到的是Controller的方法还是其他资源
        if (!(handler instanceof HandlerMethod)) {
            // 当前拦截到的不是动态方法，直接放行
            return true;
        }

        // 1、从请求头中获取令牌
        String token = request.getHeader(jwtAdminProperties.getAdminTokenName());

        // 2、校验令牌
        try {
            log.info("jwt校验:{}", token);
            Claims claims = JwtUtil.parseJWT(jwtAdminProperties.getAdminSecretKey(), token);
            Long adminId = Long.valueOf(claims.get(JwtClaimsConstant.ADMIN_ID).toString());
            Integer adminStatus = Integer.valueOf(claims.get(JwtClaimsConstant.ADMIN_PERMISSION).toString());
            AdminContext.setCurrentId(adminId);
            AdminContext.setCurrentStatus(adminStatus);
            FeignContext.setCurrentToken(token);
            // 3、通过，放行
            return true;
        } catch (Exception ex) {
            // 4、不通过，响应401状态码
            throw new AccountNotLoginException(MessageConstant.INVALID_ACCESS_PATH);
        }
    }
}
